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If a chain of matrices is given, we have to find a minimum number of correct sequences of matrices to multiply. We know that the matrix multiplication is associative, so for four matrices ABCD, we can multiply A(BCD), (AB)(CD), (ABC)D, and A(BC)D, in these sequences. Like these sequences, our task is to find which ordering is efficient to multiply.ExampleIn the given input there is an array say arr, which contains arr[] = {1, 2, 3, 4}. It means the matrices are of the order (1 x 2), (2 x 3), (3 x 4). Input − The ... Read More
As we know the bit-wise AND is represented as ‘&’ and the logical operator is represented as ‘&&’. There are some fundamental differences between them. These are as follows − bitwise AND operator The bitwise AND (&) operator performs a bit-by-bit AND operation between two integers. The bitwise AND operator works on integer, short int, long, unsigned int type data, and also returns that type of data. Here, Each bit should be 1 to give the result as 1, else it will result in 0, 1 & 1 = 11 & 0 = 00 & 1 = 00 & 0 ... Read More
Through the automation of repetitive activities, expanded employee engagement, and improved verbal exchange, AI chatbots are revolutionizing human resources. These digital assistants free up HR professionals to concentrate on strategic obligations via streamlining strategies like hiring, onboarding, and answering questions. Organizations may additionally assure higher data management, quicker replies, and a more individualized experience for team of workers individuals via using AI. In this article, we will discuss the following 10 AI chatbots useful for human resources − Workday HireVue Zoho Zia Mya ... Read More
There is a big distinction between the suffix and prefix versions of ++. In this article, we will see the differences between them and will go through it's examples. Prefix version (++i) In the prefix version (i.e., ++i), the value of i first increments, and then the value of the expression becomes the new value of i. So basically it first increments and then assigns a value to the expression. Postfix version (i++) In the postfix version (i.e., i++), the value of I first increments, but the value ... Read More
Suppose we have an array of integers, in range 1 ≤ a[i] ≤ n (n = size of an array), here some elements appear twice and others appear once. We have to find all the elements that appear twice in this array. So if the array is [4, 3, 2, 7, 8, 2, 3, 1], then the output will be [2, 3]. Approach To solve this, we will follow these steps − n := size of array, make one array called ans for i in range 0 to n – 1 ... Read More
A structure is a collection of items of different data types. It is very useful in creating complex data structures with different data type records. A structure is defined with the struct keyword. Syntax Here is the following syntax of structure. struct employee { int empID; char name[50]; float salary; }; Example A program that stores student information in a structure is given as follows. #include using namespace std; struct student { int rollNo; char name[50]; float marks; char grade; }; int main() { struct student s = { 12 , "Harry" , 90 , 'A' }; cout
Given points A and B corresponding to line AB and points P and Q corresponding to line PQ; the task is to find the point of intersection between these two lines. Note − The points are given in 2D plane on X and Y coordinates. Here A(a1, a2), B(b1, b2) and C(c1, c2), D(d1, d2) are the coordinates which are forming two distinct lines and P(p1, p2) is the point of intersection. (just for a diagrammatic explanation of the point of intersection) How to find the point of intersection − Let’s take the above figure as − Example So ... Read More
The goal here is to count the number of objects of a class that are being created using a static member function. A static data member is shared by all objects of the class commonly. If no value is given, a static data member is always initialized with 0. A static member function can only use static data members of that class. We are using a class Student here. We will declare a static data member count which will store the count of objects. A static member function rollCall(void) will display the count of objects as roll no.s of students ... Read More
Enumeration is a user defined datatype in C/C++ language. It is used to assign names to the integral constants which makes a program easy to read and maintain. The keyword “enum” is used to declare an enumeration. The following is the syntax of enums. Syntax enum enum_name{const1, const2, ....... }; Here, enum_name − Any name given by user. const1, const2 − These are values of type flag. The enum keyword is also used to define the variables of enum type. There are two ways to define the variables of enum type as follows. enum colors{red, black}; enum suit{heart, diamond=8, ... Read More
Lexicographic string comparison states the strings are compared in dictionary order. For example, if two strings ‘apple’ and ‘appeal’ are there, the first string will come next because the first three characters ‘app’ are the same. Then for the first string, the character is ‘l’ and in the second string, the 4th character is ‘e’. Since ‘e’ is shorter than ‘l’, it will come first if we arrange them in lexicographic order. Before arranging, the strings are compared lexicographically. In this article, we will see different techniques to compare two strings in a lexicographic manner using C++. Using compare() functions ... Read More